The Central minute hand of the Chronograph didn't reset properly. After some uses it didn't Set Back to the 12 o'clock position anymore, but was about 1/2 minute Off. Send it in 2 Times for the same reason then Sold it when it happened a third time.
it's one of only two watches that ever got me a compliment by a non-watch-person. I think that the blue and black Versions have completely different characters. I didn't like the blue Version, but think the black one is fantastic. For others it's different